Originally Posted by Bmwnsxr
This sounds great but has anybody had any problem during emission test? I would love to do it also to my new 335xi, but just concern about harming the engine and failing the emissions. Please let me know If i am over thinking this. Thanks guys
i have had this done on my car for 2 years now approx. No problems to the engine or anything yet. Havent had to do an emission test yet but its so easy that if you are worried you can plug it back in with no problems.